Eliminating or reducing the influence of electromagnetic interference to control system is the key problem to improve the performance of flow calibration facility. In the paper, the sources, the action principles and ...
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Averaging Pitot tube flowmeter often uses a separated structure which is not convenient. The research uses a design of integration to overcome the problems and creates an intelligent system to process data. Some impro...
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As a non-radiant and unperturbed 2D/3D boundary measurement technique, Electrical resistance tomography (ERT) provides an effective way of monitoring and on-line measurements for multi-phase fluid. However, the spatia...
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Phase distribution within an annular channel is desired to know as precise as possible for industrial processes like cooling system and etc. Electrical Resistance Tomography (ERT) can be used to achieve this task sinc...
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the torsional vibration model in main drive system of cold rolling mill is built with the consideration of nonlinear stiffness and nonlinear friction coefficient. The global sliding mode controller is designed for rol...
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It presents a computer control system for processcontrol based on data-driven. The system focuses on process data and is able to deal with the complex problems such as nonlinearity, significant delay, strong coupling...
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The computer control system of a steel plant is composed of Siemens S7-400 PLC and configuration software WinCC. In order to achieve real-time control of water flow accurately in quenching process, this paper uses a c...
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As the wavelet bases usually have relative small support sets, three defects of wavelet denoising for a complex time series can be deduced. The first defect is that for in large sample size, the wavelet denoising is n...
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ISBN:
(纸本)9781849195379
As the wavelet bases usually have relative small support sets, three defects of wavelet denoising for a complex time series can be deduced. The first defect is that for in large sample size, the wavelet denoising is not better than the second kind, Fourier analysis denoising. The second is that wavelet denoising has the worse reconstructive capacity for the high frequency signal. The last defect is that the wavelet denoising is not better when there are many outliers. The numerical experiments are carried out to make sure the three deductions.
Both nonlinear theories and Fourier analysis predicate theoretically that low-order nonlinear transformation has three advantages. First, it can increase the signal-to-noise ratio of a complex time series that has a l...
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In order to improve forecast accuracy and reliability of expressway traffic flows, the variance reciprocal weighting methods in linear combination of forecasts are compared numerically with the simple average. Ten ind...
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